Backtrace:
0: X(xf86SigHandler+0x84) [0x80df204]
1: [0xb7fc9420]
2: /usr/lib/xorg/modules/drivers/fglrx_drv.so [0xb75f9647]
3: /usr/lib/xorg/modules/drivers/fglrx_drv.so(swlDalHelperSetSafeMode+0x50) [0xb75f6540]
4: /usr/lib/xorg/modules/drivers/fglrx_drv.so(swlDalHelperPreInit+0x478) [0xb75f8378]
5: /usr/lib/xorg/modules/drivers/fglrx_drv.so(atiddxPreInit+0x7f3) [0xb75ceb63]
6: X(InitOutput+0x9b1) [0x80a0551]
7: X(main+0x276) [0x806e536]
8: /lib/libc.so.6(__libc_start_main+0xd8) [0xb7d6f878]
9: X(FontFileCompleteXLFD+0xa5) [0x806da71]

Fatal server error:
Caught signal 11.  Server aborting